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Finding the Fourth Proportional to 26,311.60, 39,472.92 and 7,591.60

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Solution

The fourth proportional to 26,311.60, 39,472.92 and 7,591.60 is: 11,388.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,311.60 : 39,472.92 = 7,591.60 : x
  2. Step 2: Convert to fraction form
    26,311.60/39,472.92 = 7,591.60/x
  3. Step 3: Cross multiply
    26,311.60x = 39,472.92 × 7,591.60
  4. Step 4: Simplify right side
    26,311.60x = 299,662,619.47
  5. Step 5: Solve for x
    x = 299,662,619.47/26,311.60
  6. Step 6: Final answer
    x = 11,388.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.